If these are not localized issues and part of a spectrum of symptoms, you need to consult a neurologist for investigating for demyelinating disease called
multiple sclerosis where the disease phase is characterized by active phase and remissions. It has multiple symptoms and signs and is a diagnosis of exclusion. The symptoms of multiple sclerosis are loss of balance, muscle spasms, numbness in any area, problems with walking and coordination, tremors in one or more arms and legs.